Effects of changing protocol, grade, and direction on the preferred gait transition speed during human locomotion

Abstract Although the preferred transition speed (PTS) reported by various researchers is relatively consistent, the amount of observed hysteresis (difference between the walk–run and the run–walk transition speed) varies considerably. Variations in reported hysteresis appear to be related to the pr...

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Bibliographic Details
Published in:Gait & posture 2007-03, Vol.25 (3), p.419-424
Main Authors: Hreljac, Alan, Imamura, Rodney, Escamilla, Rafael F, Edwards, W. Brent
Format: Article
Language:English
Subjects:
Acceleration
Adaptation, Physiological
Exercise Test
Female
Gait - physiology
Gait transitions
Humans
Locomotion - physiology
Male
Orthopedics
Running
Running - physiology
Treadmill
Walking
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Summary:Abstract Although the preferred transition speed (PTS) reported by various researchers is relatively consistent, the amount of observed hysteresis (difference between the walk–run and the run–walk transition speed) varies considerably. Variations in reported hysteresis appear to be related to the protocol used to determine the transition speeds. This investigation compared the PTS, and the amount of hysteresis observed between the incremental and continuous protocols at various inclination conditions. The PTS was significantly greater in the continuous than the incremental protocol within both the 10% and 15% inclination conditions. The amount of hysteresis, however, did not vary significantly between protocols nor between inclination conditions. In the incremental protocol, the amount of hysteresis appears to be related to the size of the speed increment used. In the continuous protocol, the amount of hysteresis could be related to the rate of treadmill acceleration.
ISSN:0966-6362
1879-2219
DOI:10.1016/j.gaitpost.2006.05.005